EP1294448B1 - Gasdruckregler für beatmungsgerät - Google Patents

Gasdruckregler für beatmungsgerät Download PDF

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Publication number
EP1294448B1
EP1294448B1 EP01948385A EP01948385A EP1294448B1 EP 1294448 B1 EP1294448 B1 EP 1294448B1 EP 01948385 A EP01948385 A EP 01948385A EP 01948385 A EP01948385 A EP 01948385A EP 1294448 B1 EP1294448 B1 EP 1294448B1
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EP
European Patent Office
Prior art keywords
air
pressure
noise
regulator
respirator
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Expired - Lifetime
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EP01948385A
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English (en)
French (fr)
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EP1294448A1 (de
Inventor
Kaushik I. Patel
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3M Innovative Properties Co
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3M Innovative Properties Co
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Publication of EP1294448A1 publication Critical patent/EP1294448A1/de
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/04—Gas helmets
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves

Definitions

  • the present invention relates to respirator systems of the type that provides a forced flow of air to the respirator wearer from a source of compressed air.
  • a respirator typically comprises a head piece in some form, shaped to provide a breathing zone around at least the nose and mouth of the wearer.
  • the breathing action of the wearer alone causes air to be drawn into the breathing zone through a filter.
  • Other respirators provide a forced flow of filtered air to the breathing zone, thereby relieving the wearer of the need to inhale against the resistance of the filter and, at the same time, ensuring that any leakage in the respirator is outwards (that is, away from the breathing zone rather than into it).
  • Respirators that use forced air flow are preferred in certain working environments, particularly those that are physically demanding on the wearer and those where the wearer is likely to benefit from the cooling effect of air flowing through the breathing zone.
  • a forced flow of air into the breathing zone of a respirator head piece may be generated by a fan or by a blower which, together with its power source, may be carried by the respirator wearer (known as a powered system).
  • the forced flow of air may be obtained from a source of compressed air, which may be either fixed or portable (known as a supplied air system).
  • the respirator head piece is connected to the air source through a regulator, to reduce the pressure at which air is supplied to the head piece to a suitable level.
  • respirator head pieces suitable for use in supplied air systems are described in US-A-4 449 524 ; EP-A-0 602 847 ; GB-A-2 032 284 , and in US-A-3 963 021 and US-A-4 280 491 .
  • the pressure regulator is part of the equipment that is carried by the respirator wearer, in which case it is typically mounted on a belt at the wearer's waist and is provided with a control knob, accessible to the wearer, by which the flow of air into the head piece can be adjusted.
  • the pressure regulator may be located at the socket.
  • a so-called "self-contained breathing apparatus" intended for use in a toxic environment or under water, also supplies the user with air obtained from a source of compressed air via one or more pressure regulators.
  • the head piece is in the form of a tightly-fitting mask as described, for example, in WO 97/30753 and 97/46281 , and in EP-A-0 631 795 , 0 766 979 and 0 921 066 .
  • the compressed air pressures used in this type of system are comparatively high and the pressure regulator arrangements that are used are consequently more complex than those used in supplied air systems, for which standard (lower cost) regulator devices have typically been employed despite the fact that they offer the user much less control over the air flow into the head piece.
  • US-A-4 739 795 describes that noise may also be associated with pressure reduction valves in fluid supply systems.
  • US-A-4 739 795 proposes to reduce the noise by providing the pressure reduction valve with a porous insert through which fluid passes before reaching the fluid outlet of the valve.
  • the noise generated by the compressed air source of the system can be transmitted to the head piece or mask and thus to the ears of the user.
  • noise reduction in respirator systems does not receive much attention and is often ignored completely.
  • Examples of respirator systems that do incorporate noise reduction arrangements are those available, under the trade designations "Airstream AH 18" and "Visionair", from Minnesota Mining and Manufacturing Company of St. Paul, Minnesota, USA.
  • noise reduction is provided by two sintered discs contained in the low-pressure hose leading from the pressure regulator to the respirator head piece and, in the second system, it is provided by muffling the air supply tube within the head piece itself.
  • the cost of a respirator system is a particularly important factor because, even if a system offers particular advantages, users may be tempted for costs reasons to make do with an inferior system.
  • effective pressure regulation and noise reduction are known to be beneficial to the wearer and would make the use of a supplied air respirator system less unpleasant, they are often not provided for reasons of cost.
  • the present invention is concerned with enabling pressure regulation and noise reduction to be provided in a respirator system at an acceptable cost.
  • the present invention provides a regulator assembly for use in a respirator system, as defined in the accompanying claim 1.
  • air includes breathable gases.
  • the respirator shown in Fig. 1 includes headgear in the form of a helmet 1 which, in use, defines a substantially closed breathing zone around part of the wearer's head including the wearer's nose and mouth.
  • the helmet 1 comprises (i) a shell 3 that is intended to extend over the top, back and sides of the head of the respirator wearer, and (ii) a visor 5 that extends downwards from the front of the shell to cover the face of the wearer.
  • the shell 3 is supported on the wearer's head by a harness (not visible in the drawing), and a seal (also not visible in the drawing) is provided to close the gap between the shell 3 and the wearer's head while a flexible membrane 7 extends from the lower edge of the visor 5 to bear against the wearer's chin and close the bottom of the helmet.
  • a flexible, low-pressure hose 9 extends from the rear of the helmet 1 to connect the interior of the helmet, via a regulator assembly 11 and a flexible, high-pressure air line 13, to a source of filtered compressed air (not shown).
  • the filtered compressed air may be provided through a fixed wall-mounted socket (not shown), to which the remote end of the high-pressure line 13 is releasably connected, possibly via an additional filtration unit to remove particulates, moisture and/or odour.
  • the source of compressed air may be a compressed air cylinder with a suitable pressure regulator.
  • the regulator assembly 11 which is described in greater detail below, is provided with a belt 14 so that it can be worn at the wearer's waist.
  • filtered air from a compressed air source is supplied, through the high-pressure line 13, to the regulator assembly 11 in which the pressure of the air is reduced in order to provide a flow of air that meets the safety requirements' to which the respirator is directed, and also the requirements of the respirator wearer.
  • the air is then delivered by the low-pressure hose 9 into the breathing zone (defined by the helmet 1 around the wearer's head), and is inhaled by the wearer.
  • Surplus filtered air and exhaled air leave the breathing zone through natural leakage at the seals or through vents that are formed in the helmet 1 adjacent the wearer's mouth specifically for that purpose.
  • a one-way outlet valve is provided in the helmet adjacent the wearer's mouth to provide a route by which surplus filtered air and exhaled air can leave the breathing zone, but that is not essential.
  • the rate at which surplus filtered air and exhaled air leave the helmet typically causes a slight positive pressure (of about 2 to 4 Pa) to build up within the breathing zone, but that is also not essential.
  • the regulator assembly 11 will now be described in greater detail with reference to Figs. 2 to 5 , which show the assembly disconnected from the respirator system.
  • the various components of the assembly 11 are contained within a casing 15 that has an input port 17 at one lower corner through which compressed air enters the assembly. From the input port 17, the air passes through an odour filter 18 to a pressure-reduction stage, indicated generally at 19, and then through a noise-reduction stage 21, before leaving the assembly through an outlet port 23 on the top of the casing.
  • the high-pressure line 13 may be attached to the regulator assembly 11 by a compressed air quick-release coupling 13a ( Fig.
  • a bracket 24 can be located on the back of the casing 15 through which the belt 14 can be threaded to mount the regulator assembly 11 at the waist of the respirator wearer.
  • the bracket 24 is secured to the casing 15 by a rivet 24a that permits pivotal movement of the assembly 11 relative to the bracket when the respirator is in use.
  • the regulator assembly 11 can thus swivel and adjust its orientation in response to movement of the respirator wearer.
  • the pressure-reduction stage 19 of the assembly comprises a pressure regulator that functions to reduce the pressure of the incoming air from a value typical of the compressed air source (generally in the range of 2 to 10 bar) to a level that will provide an appropriate flow of air into the helmet 1 of the respirator system ( Fig. 1 ).
  • the pressure of the air leaving the regulator will be in the range of about 1.5 to 2 bar.
  • Pressure regulators are well known devices and exist in many different forms as can be seen, for example, from WO 99/13945 and 97/13185 ; US-A- 5 586 569 , 3 926 208 and 3 811 400 ; and EP-A-0 586 078 and 0 303 583 .
  • the regulator employed for the pressure reduction stage 19 of the assembly 11 is one that, for a given regulator setting, will provide a substantially constant flow of air for any inlet pressure in the range of at least 3 to 8 bar (and preferably in the range of from 2 to 10 bar). Desirably, the regulator should be capable of providing a substantially constant flow of air at a selected level within the range of about 150 l/min to about 305 l/min.
  • a control knob 25 on the top of the regulator projects from the casing 15 of the assembly 11 to enable the flow of air from the respirator to be adjusted. The control knob 25 is accessible to the respirator wearer when the respirator is in use, and is provided with a locking collar 30 so that it can be fixed in any desired position.
  • a preferred form of regulator will now be described briefly with reference to Fig. 5 . It should be noted that some of the components of the regulator have been omitted from Fig. 4 for the sake of clarity.
  • the regulator comprises a balanced poppet valve 27, 28 controlled by a pressure-responsive diaphragm 33 to provide accurate pressure (and hence flow) regulation.
  • the poppet valve comprises a valve poppet assembly 27 urged by a light spring 27a into cooperation with a valve seat 28 to control the flow of air from an input passage 29 on the downstream side of the filter 18 to an output passage 30. From the output passage 30, the air (which is now at a reduced pressure) passes to the outlet port 23 of the regulator assembly 11 through the noise reduction stage 21 which will be described in greater detail below.
  • a stem 31 of the valve poppet 27 extends into a control chamber 32 on one side of the pressure-responsive diaphragm 33, that chamber being in communication, through an aperture 34, with the output passage 30.
  • the diaphragm 33 is biased, from the other side, by a spring 35 the pressure of which is adjusted by turning the control knob 25.
  • the regulator When the control knob 25 is at one end of its range, whereby the pressure applied to the diaphragm 33 by the spring 35 is at a minimum, the regulator functions to deliver a substantially constant minimum flow of air (typically about 150 l/min) to the outlet port 23 of the regulator assembly 11, over the normal range of input pressures from the compressed air source. This is achieved as follows:
  • the diaphragm 33 adopts a position determined by the spring 35 and, in turn, adjusts the position of the valve poppet assembly 27 relative to the valve seat 28. Air supplied by the high-pressure hose 13 flows through the poppet valve, and the resulting pressure in the output passage 30 is communicated through the aperture 34 to the control chamber 32, causing an adjustment in the position of the diaphragm 33 (and hence in the position of the valve poppet assembly 27 relative to the valve seat 28) until equilibrium is achieved.
  • the minimum air flow level provided by the regulator assembly is generally selected to provide to the respirator wearer with protection sufficient to satisfy regulatory requirements. If the respirator wearer requires an increased flow of air into the helmet 1 (i.e. greater than the 150 l/min. mentioned above for example, to provide increased cooling), he/she adjusts the control knob 25 to increase the pressure applied by the spring 35 to the diaphragm 33 and thus move the valve poppet assembly 27 further from the valve seat 28. Thereafter, the regulator functions as described above to maintain the output flow substantially constant at the new level despite fluctuations or changes in the air supply pressure, or changes in the pressure at the outlet port 23.
  • the regulator employed as the pressure reduction stage 19 of the assembly 11 need not have the particular construction described above with reference to Fig. 5 and that other forms of regulator could be used. However, the use of a regulator that will respond rapidly to deliver a substantially constant output pressure (and hence a substantially constant flow of air) for any particular setting of the control knob 25 across the normal range of input pressures from the compressed air source is preferred.
  • the regulated flow of air then passes to the outlet port 23 of the assembly 11 via the noise reduction stage 21, shown in both Figs. 4 and 5 .
  • the noise-reduction stage 21 of the assembly 11 comprises two muffler discs 41, 43 formed of a noise-reducing material and located in the flow path of air from the output passage 30 of the pressure-reduction stage 19.
  • the discs are separated from each other by a chamber 45.
  • the discs 41, 43 may be formed from any suitable material, for example a sintered polymeric or metallic material, and need not both be formed from the same material. Examples of suitable materials for the discs 41, 43 are high density polyethylene and polypropylene having a thickness of about 6 mm.
  • the first muffler disc 41 is located immediately in front of the outlet 39 from the passage 30, with one of its plane surfaces directed towards the outlet so that air emerging from the passage 30 impinges on a region in the upper part of the disc (as seen in Fig. 4 ).
  • the cross-sectional area of the outlet 39 is typically very small in comparison to the area of the plane face of the disc and, if the air from the outlet 39 were to pass straight through the disc, the muffling effect of the latter would be comparatively small.
  • a deflector plate 47 formed as part of the moulding of the casing 15, is provided to cover the upper half of the disc 41 on the side opposite the outlet 39, thereby diverting air down through the disc so that it emerges from the lower half of the disc into the chamber 45.
  • the first disc 41 thus muffles the noise of the air emerging from the regulator outlet 39 and, in combination with the deflector 47, also serves to diffuse the air flow.
  • the flow is diffused further in the chamber 45 and turned through 90° before it impinges on, and passes through, the second muffler disc 43 in which further noise reduction occurs.
  • the air then leaves the assembly 11 through the outlet port 23 which, advantageously, is inclined to the vertical as shown in the drawings and rotatable on a seat 49 to accommodate various positions of the low-pressure hose 9.
  • the use of the deflector plate 47 not only enables the disc 41 to have a muffling effect despite being located immediately adjacent the regulator outlet 39 but actually enhances the effect because it encourages the air to flow through a large area of material.
  • the use of two muffler discs 41, 43 is advantageous because it enables a desired noise reduction to be achieved using a more porous material than would be necessary if only one disc were used.
  • the noise-reduction stage 21 of the assembly 11 reduces the noise level as measured at the ear of the wearer to a level of less than 65dB.
  • the odour filter 18 in the regulator assembly 11 is provided to reduce odours in the compressed air systems, which would otherwise be carried with the air into the respirator helmet 1.
  • the odour filter is not essential to the operation of the regulator assembly 11 and could be omitted.
  • the odour filter 18 is located in the input to the pressure-reduction stage 19 of the assembly, but that location is not essential and the filter could be positioned elsewhere in the air flow path on the high pressure side of the regulator 19 (including outside the casing 15).
  • the odour filter 18 can be of any suitable type, for example a carbon filter.
  • the regulator assembly 11 also includes a whistle 51, located in a port 52 the lower part of the casing 15, to provide a warning to the respirator wearer in the event that the pressure of the air supplied via the high pressure hose 13 falls below a certain level.
  • the port 52 is in communication, through an aperture 53, with the input port 17 of the regulator assembly 11 whereby the pressure of the air supplied by the high-pressure hose 13 to the odour filter 18 is applied also to the adjacent, open, end 54 of the main body 55 of the whistle 51 (see also Fig. 6 which shows the whistle in greater detail, removed from the regulator assembly 11).
  • the body 55 of the whistle contains a piston 56 one end face of which is exposed to the pressure at the open end 54.
  • the piston 56 cooperates with a valve seat 57 to form a whistle valve controlling the passage of air from the open end 54, via a longitudinal bore 58 within the piston, to the whistle flute 59 which projects from the casing 15 of the regulator assembly 11 and is visible in Fig. 2 .
  • a spring 60 acts on the piston 56 to urge the latter away from the valve seat 57 and permit the passage of air through the whistle.
  • the pressure of the air supplied to the input port 17 of the regulator assembly 11 (and thus to the end face of the piston 56) is sufficient to overcome the action of the spring 56 and to hold the piston against the valve seat 57 so that the whistle valve is closed.
  • warning device Only in the event of the supplied air pressure falling below a predetermined level (for example, 2.5 bar) will the spring 56 move the piston away from the valve seat, permitting air to flow along the bore 58 and exit the regulator assembly 11 via the aperture 61 of the flute 59, causing the latter to sound and give a warning to the respirator wearer of a potentially dangerous situation.
  • a predetermined level for example, 2.5 bar
  • Other forms of warning device could be used instead of the whistle 51, for example, other audible devices such as bells and also sensory warning devices, and that it is not essential for the warning device to form part of the regulator assembly 11 although it is convenient for it to do so.
  • the regulator assembly 11 further includes an outlet 63 adjacent, and in communication with, the high pressure inlet 17 for the connection, if desired, of a spray gun (not shown).
  • This arrangement thus enables the connection of a spray gun to the same high-pressure hose that is used to supply the respirator. If the outlet 63 is not required, it is blanked off as shown in Figs. 4 and 5 .
  • the symmetrical arrangement of the high-pressure inlet 17 and outlet 63 relative to the filter 18, as illustrated in Figs. 4 and 5 enables these two ports to be interchanged if desired.
  • a regulator assembly as described above with reference to Figs. 2 to 7 can be manufactured as a standard unit that will provide, for a variety of supplied air respirator systems, not only the essential function of reducing the pressure of the air before it reaches the respirator head piece but also the highly desirable function of reducing the noise that reaches the ears of the respirator wearer from the compressed air system.
  • the particular regulator assembly 11 described above offers the additional advantageous feature that, for any one setting of the control knob 25, the flow rate of air into the respirator head piece will be substantially constant.
  • the same standard unit can additionally provide an odor filter, an audible warning device, and a connection for a spray gun.
  • inlet and outlet ports 17, 23, 63 of the assembly are selected for connection to standard hoses but could be provided with adaptors for connection to non-standard hoses if required.
  • the headpiece 1 of the respirator may take other forms than that shown in Fig. 1 .
  • the head piece may retain the helmet form shown in Fig. 1 but be provided, additionally, with a hard hat inside the shell 3, which fits around and further protects the head of the wearer.
  • the headpiece may be required to provide only respiratory protection for the wearer. In that case, it may comprise simply a face mask or visor (possibly with a hood to cover, but without providing protection for, the head of the wearer).
  • Fig. 8 shows a head piece comprising a visor 65 with a loose fitting hood 67 at the rear of which is the low pressure hose 9 providing a passage for a forced air flow from the regulator assembly 11 (not shown) into the head piece.
  • Fig. 9 shows a full face mask intended to cover the eyes as well as the nose and mouth of the wearer, with an air inlet 69 for connection to the low pressure hose 9 (not shown) provided at the front of the mask.
  • the mask also has an outlet valve 71 positioned adjacent the air inlet 69 to provide a route by which surplus filtered air and exhaled air can leave the mask.
  • Fig. 10 shows a head piece comprising a visor 73 and a head harness 75, and an air duct 77 extending over the top of the wearer's head to carry a forced flow of air to the inside of the visor.
  • the low pressure hose 9 (not shown) from the regulator assembly would be connected to the inlet 79 of the air duct 77.
  • Fig. 11 shows yet another head piece comprising a generally cylindrical head enclosure 81 formed from a transparent material and provided with a cape 83 for covering the upper part of the body of the wearer.
  • the head piece has a supply pipe 85 for carrying a forced flow of air to the interior of the head enclosure 81, the inlet of 87 of the supply pipe being connected, in use, to the low pressure hose 9 (not shown) from the regulator assembly.
  • any of the respirator head pieces illustrated in Figs. 1 and 5 to 8 can, if required, be provided with an indicator device that is capable of warning the wearer in the event that the air flow into the breathing zone within the helmet falls below a safe level.
  • indicator devices are described in DE-A-30 32 371 , GB-A-2 130 893 , US-A-4 765 326 , and in EP-A-0 349 191 and 0 602 847 .

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Control Of Fluid Pressure (AREA)
  • Manipulator (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Claims (9)

  1. Regleranordnung (11) für den Einsatz in einem Beatmungsgerät zur Versorgung des Kopfteils des Beatmungsgeräts mit einer geregelten Luftströmung, wobei die Anordnung Folgendes aufweist:
    ein Gehäuse mit (a) einem Lufteinlassanschluss (17) zur Verbindung mit einer Quelle von Luft mit vergleichsweise hohem Druck und (b) einem Luftauslassanschluss (23) zur Verbindung mit dem Kopfteil des Beatmungsgeräts,
    wobei das Gehäuse eine Luftdruckverringerungsstufe (19) in Verbindung mit dem Einlassanschluss (17) enthält,
    gekennzeichnet durch
    eine Geräuschreduzierungsstufe (21), die sich im Luftströmungsweg im Gehäuse zwischen der Druckverringerungsstufe (19) und dem Auslassanschluss (23) befindet,
    wobei die Geräuschreduzierungsstufe (21) ein erstes und ein zweites Geräuschreduzierungselement (41, 43) aufweist, die entlang dem Luftströmungsweg voneinander beabstandet sind, wobei das erste Geräuschreduzierungselement (41) neben dem Luftauslass (39) der Druckverringerungsstufe (19) positioniert ist und ein Umlenkelement (47) aufweist, das so angeordnet ist, dass es die Luftströmung von der Druckverringerungsstufe (19) durch das erste Geräuschreduzierungselement (41) umlenkt und dadurch die Luftströmung diffus verteilt, bevor sie das zweite Geräuschreduzierungselement (43) erreicht.
  2. Regleranordnung nach Anspruch 1, wobei jedes Geräuschreduzierungselement (41, 43) eine Geräuschreduzierungsmaterialmasse umfasst, die den Querschnitt des Luftströmungswegs füllt.
  3. Regleranordnung nach Anspruch 1, wobei jedes Geräuschreduzierungselement (41, 43) eine Scheibe aus gesintertem Material umfasst.
  4. Regleranordnung nach Anspruch 1, wobei das Umlenkelement (47) so positioniert ist, dass es die direkte Strömung von Luft durch das erste Geräuschreduzierungselement (41) von der Druckverringerungsstufe (19) blockiert.
  5. Regleranordnung nach Anspruch 1, wobei die Druckverringerungsstufe (19) einen Druckregler aufweist, dessen Ausgangsluftströmung verstellbar ist.
  6. Regleranordnung nach Anspruch 5, wobei der Druckregler mehrere Einstellungen hat, die jeweils einer jeweiligen Ausgangsluftströmung vom Regler zugeordnet sind, wobei die Ausgangsströmung für jede Einstellung im Wesentlichen konstant und von dem Druck unabhängig ist, mit dem Luft von der Quelle über mindestens einen vorgewählten Bereich von Drücken zugeführt wird.
  7. Regleranordnung nach Anspruch 1, ferner mit einem Geruchsfilter (18), der sich im Luftströmungsweg in dem Gehäuse befindet.
  8. Regleranordnung nach Anspruch 1, ferner mit einer Warnvorrichtung (51), die dem Druck am Lufteinlassanschluss (17) ausgesetzt ist und so wirkt, dass sie ein Warnsignal abgibt, wenn der Druck am Lufteinlassanschluss einen vorbestimmten Wert unterschreitet.
  9. Beatmungsgerät mit einer Regleranordnung nach Anspruch 1, wobei der Auslassanschluss (23) der Anordnung mit einem Kopfteil (1) eines Beatmungsgeräts verbunden ist.
EP01948385A 2000-06-16 2001-06-14 Gasdruckregler für beatmungsgerät Expired - Lifetime EP1294448B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0014713.2A GB0014713D0 (en) 2000-06-16 2000-06-16 Pressure regulator for a respirator system
GB0014713 2000-06-16
PCT/US2001/019192 WO2001097914A1 (en) 2000-06-16 2001-06-14 Pressure regulator for a respirator system

Publications (2)

Publication Number Publication Date
EP1294448A1 EP1294448A1 (de) 2003-03-26
EP1294448B1 true EP1294448B1 (de) 2008-04-16

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Application Number Title Priority Date Filing Date
EP01948385A Expired - Lifetime EP1294448B1 (de) 2000-06-16 2001-06-14 Gasdruckregler für beatmungsgerät

Country Status (12)

Country Link
US (1) US6619286B2 (de)
EP (1) EP1294448B1 (de)
JP (1) JP2004500934A (de)
KR (1) KR100799396B1 (de)
CN (1) CN1279987C (de)
AT (1) ATE392234T1 (de)
AU (2) AU6984201A (de)
BR (1) BR0111606A (de)
CA (1) CA2410545C (de)
DE (1) DE60133645T2 (de)
GB (1) GB0014713D0 (de)
WO (1) WO2001097914A1 (de)

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JP3994079B2 (ja) * 2003-10-06 2007-10-17 株式会社タバタ ダイビング用レギュレータ
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US6619286B2 (en) 2003-09-16
CA2410545A1 (en) 2001-12-27
WO2001097914A1 (en) 2001-12-27
DE60133645T2 (de) 2009-05-28
ATE392234T1 (de) 2008-05-15
CN1444497A (zh) 2003-09-24
BR0111606A (pt) 2003-07-01
DE60133645D1 (de) 2008-05-29
EP1294448A1 (de) 2003-03-26
GB0014713D0 (en) 2000-08-09
JP2004500934A (ja) 2004-01-15
KR100799396B1 (ko) 2008-01-30
CA2410545C (en) 2008-08-19
US20020073994A1 (en) 2002-06-20
AU2001269842B2 (en) 2005-04-14
KR20030016292A (ko) 2003-02-26
CN1279987C (zh) 2006-10-18
AU6984201A (en) 2002-01-02

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